3 ms·

To dispel misconceptions: from the top of the readme: "scala-ts is a simple tool which can generate TypeScript interfaces and classes from Scala case classes."

by sjrd 10y ago

To dispel misconceptions: from the top of the readme: "scala-ts is a simple tool which can generate TypeScript interfaces and classes from Scala case classes." Not really what I call a compiler. This is more a REST endpoint consumer generator. PS: for the reverse exercise, here is a syntactical TypeScript to Scala translator: https://github.com/densh/TypeScript/tree/topic/scala-emitter?files=1 https://github.com/densh/TypeScript/tree/topic/scala-emitter...

pyrophane 10y ago
Ah, thank you. I was already trying to figure out the why I would need to compile my Scala down to typescript, presumably so I could then compile that down to JavaScript
- sjrd 10y ago
  If you want to compile your Scala code to JavaScript, there's already a widely accepted and stable solution: https://www.scala-js.org/ https://www.scala-js.org/
agentgt 10y ago
Funny thing is you don't even need a compiler to do what the project is ostensibly doing which is just stub generation aka struct type mapping (i.e. data objects). You can use reflection (you only have to do it once so its not slow). I have done this with Java (use reflection to generate JavaScript stubs).
- clhodapp 10y ago
  Reflection APIs and compiler internals actually tend to be quite similar. In the case of Scala in particular, the reflection API was literally produced by scooping out part of the compiler into a separate library and trying to polish (or hide) the rough edges. The effort wasn't entirely successful in producing an easy-to-use API, but the in-development successor project, scala.meta, is still very compiler-y (just because, again, compiler internals tend to look a lot like reflection APIs). Further, it is my belief that your project actually was a compiler, whether you thought of it as that or not!
  - lmm 10y ago
    It's a compiler but not a Scala compiler. Rather it's a compiler for a smaller language, whether one thinks of and names that language or not. (I actually recommend pushing that line of thought all the way through, and using something like thrift (with Scrooge) for this kind of problem. The thrift compiler is a compiler and the thrift IDL is a defined and specified language rather than an ad-hoc subset of Scala)

by sjrd 10y ago

pyrophane 10y ago

Ah, thank you. I was already trying to figure out the why I would need to compile my Scala down to typescript, presumably so I could then compile that down to JavaScript

sjrd 10y ago
If you want to compile your Scala code to JavaScript, there's already a widely accepted and stable solution: https://www.scala-js.org/ https://www.scala-js.org/

agentgt 10y ago

Funny thing is you don't even need a compiler to do what the project is ostensibly doing which is just stub generation aka struct type mapping (i.e. data objects). You can use reflection (you only have to do it once so its not slow). I have done this with Java (use reflection to generate JavaScript stubs).

clhodapp 10y ago
Reflection APIs and compiler internals actually tend to be quite similar. In the case of Scala in particular, the reflection API was literally produced by scooping out part of the compiler into a separate library and trying to polish (or hide) the rough edges. The effort wasn't entirely successful in producing an easy-to-use API, but the in-development successor project, scala.meta, is still very compiler-y (just because, again, compiler internals tend to look a lot like reflection APIs). Further, it is my belief that your project actually was a compiler, whether you thought of it as that or not!
- lmm 10y ago
  It's a compiler but not a Scala compiler. Rather it's a compiler for a smaller language, whether one thinks of and names that language or not. (I actually recommend pushing that line of thought all the way through, and using something like thrift (with Scrooge) for this kind of problem. The thrift compiler is a compiler and the thrift IDL is a defined and specified language rather than an ad-hoc subset of Scala)